Lock



April 8, 1924. A 1,489,815"

' B. C. BROSIN ET AL Loox Filed Fb- 2l. 3.923 2 Sheets-Sheet 2 Patented Apr. 8, 19243.

ATENT OFFICE.V .y

BENJAMIN C. BROSIN AND JACOB H. SIEGEL, OF NEW YORK, N. Y.

LOCK.

Application iiled February 21, 1923. Serial N0. 620,332.

To all lwhom t may concern:

Be it known that we, BENJAMIN C. BRosIN, a native of Russia, and JACOB H. SIEGEL, a citizen of the United States, both residents of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful improvements in Locks, of which the following is a specification sucient to enable those skilled in the art to which the invention appertains to utilize the same.

Our improvements relate to locks generally, of various styles and for various purposes,-our object being the production of lock mechanism of the tumbler type, of eective but relatively simple and inexpensive structure, which may be readily adapted to the varying requirements of use, as hereinafter fully set forth,the invention consisting in the specific combination and arrangement of co-acting parts and appurtenances described and claimed.

In the accompanying drawings we illustrate, by way of exemplication, a practical embodiment of the essential features of our invention, although we do not limit ourselves to the identical form and construction of parts shown therein, since modiiications in minor details, and equivalent mechanical expediente, may be resorted to with like results and without departing from the spirit and intent of our invention in this respect.

With this understanding,

Fig. 1, represents a front view of our improved lock;

Fig. 2, an end elevation thereof;

Fig. 3, a side elevation, with the mortise plate counter-sunk in its fixed support, and the lock casing partially swung away therefrom;

Fig. 4, represents a section of the lock casing and contained operative parts, taken upon plane of line 4-4, Fig. 1;

Fig. 5, a section of the mortise plate, taken upon the plane of the same line,

'4-4, Fig. 1;

1, and taken upon plane of `line -10-10,

ofV the. operative parts in loc ed relationship; l

Fig. 11, is a view like unto Fig. 10, show- 1ing the operative parts in unlocked posilon;

Fig. 12, is a perspective view of the bolt plate;

Fig. 13, is a rear view of thelock casing without the operative parts, and inverted as related to Fig. 1;

Fig. 14, is a front view, upon an enlarged scale, of the rotative key barrel or escutcheon;

Fig. 15, is a section taken upon plane of line 15-15, Fig. 14; l

Fig. 16, is a rear view of the fixed tumbler housing;

Fig. 17, is a section taken upon plane of line 17-17, Fig. 16;

Fig. 18, is a section taken upon plane of line 18-18, Fig. l0;

' Fig. 19, is an enlarged sectional view of the operative parts shown in Fig. 18;

Fig. 20, is a sectional detail taken on plane o-f line 20-20, Fig. 1;

Fig. 21, is a side elevation of the main rocking lock jaw;

Fig. 22, is an elevation thereof taken at right angles to Fig. 21; v

Fig. 23, is a perspective view of the auxiliary rock jaw;

Fig. 24, is a view illustrating the spreading apart of the rock jaws by the head of the mortise stud.

The base plate S, in the form and construction of lock shown in the drawings, consists of a shallow rectangular box or tray which is countersunk in a fixed part F, and constitutes the support for the lock stud s, having the convex head s', the annular shoulder s2, of which functions as the coupling means for engagement ywith the lock rocking-jaws j, j", of the bolt mechanism, the latter being mounted in the casing C, which is formed with a hinge plate H, by which it is aiiixed to the movable part M, of the closure.

Both of said lock rocking jaws j, j", are pivotally supported, as at c, o', on the front plate C', of the casing C, the rear plate C, of'which latter is formed with an aperture c2, for the accommodation of the lockstud s, as indicated more particularly in Flg. 4,

of the-drawings. Thel main lock rock-jawk j, is formed with a latch arm j', having a lateral shoulder j, for engagement with an arm b, of the rotative bolt plate or member B. Normally this latch lever shoulder 7 rests against the fixed abutment 25X,

formed for the purpose on the tumblerr lsaid tumbler housing T, said annular bearing t, being shown more particularly in Figs. 16 and 17 of the drawings, and `said housing T, being formed with a concentric annular recess t', for the accommodation of the flange e, of said key escutcheon F, as shown in Figs. 4, 18 and 19 of the drawings.

The key escutcheon E, and the bolt plate B, rigidly united and forming practically an integral unit, are both formed with coincidental radial key slots for the reception of a plural flanged key K. In the Construction and arrangement of .parts illustra-ted in the drawings, provision is made for the use of a triple flange key K, shown in Figs. 8 and 9, and the key slots m, in

the key escutcheon E, and bolt plate B, are correspondingly formed for the reception of the tripartite flanges k, 71, of the key K, although we do not limit ourselves in this respect, since the key K, may be made with any desired or required number of equidistant radial ward flanges 7c, 7c, and the key escutcheo'n E, and bolt plate B, with a corresponding number of radiant key slots a2, in adapting our typewof loc-k to the varying requirements of special uses. Obviously, the greater the number of key flanges 7c, and slots m, provided, Vthe greater will be the number of ward combinations possible or available; land in this connection we wish to state that we Ydo not limit ourselves to any length of key or depth oil key slot, nor to a single set of radially coincidental yieldable ward pins or tumblers j),

shown in the drawings by vway of exemplification, since parallel sets of such tumbler pins 79. and their elastic resilient plunger` bolts 1'., may be installed in our type of lock provided the key K, and slots are oi f suliicient depth, and hence. we contemplate the key escutcheon E, and is formed with a base disc p', limiting its outward thrust into one of the key slots A plunger bolt z', bears against the pin disc p', and tends constantly to protrude the pin p, into its slot by means of a compression spring z", interposed between said plunger bolt z', and a yscrew `bushing` t2, inserted in the bore t3, of

the housing T, in which said plunger bolt c', is positioned,'-the nose of the plunger bolt z', protruding normally into the `tumbler pin recess e, in the key escutcheon E, and thereby lholding said escutcheon against rotative movement until ythe .plunger vbolt c', is forced back and lout of the recess e', by the engagement with the proper ward in the particular flange of the key adapted thereto, when the escutcheon may be rotatively moved provided the other tumbler pins in the series are in engagement with their respective wards in the other flanges of the key,-it being understood in this connection that the ldepth of ward notches in the several flanges of the key differ, so that the right combination has to be effected to lock or unlock the key escutcheon in a manner well known in the art of tumliiler locks generally.

In Fig. 10, the parts are shown in locked position with the bolt arm b, resting upon the shoulder Vj", of the `latch arm j, of the rock lock lever j, and Coniining said shoulder j, to its normal seat on the abutment t". When the key is inserted in the escutcheon E, a-nd the proper combination efl'ected, the escutcheon may be rotated in the direction of the arrow a, Figs. 10 and ll, until the cani surface b', of the bolt arm b, encounters the reverse side of the shoulder j, of the rock-ing lock jaw j, the continued motion of the saidbolt arm b, thereby rocking the jaw j, and through it the rocking lock jaw jx, also, against the resistance of the retractile spring R, and thereby withdrawing said rocking lock jaws j, jx, from engagement with the studs, until the end of the bolt varm passes beyond and out of contact with said shoulder j, when the spring R, immediately closes the jaws j, jx. in order to again secure the said lock jaws in normal closed position it is necessary to reverse the motion of the `escutcheon by means of the key `until the bolt arm b, again bears against the shoulder j, as in Fig. l0. Before this reversal of movement of the 'escutcheon E, however, and while the bolt arm is out of contact with the shoulder j, the jaws j, jx, may lbe'opened by means of the push pin d, slidable in the slot c3, in the front plate C', of the casing C,said push pin al, being positioned to bear against a lug j2, Aformed for the purpose on the rocking lock jaw j, as indicated more particularly in Figs. 10. 11 andQO, of the drawings. Thus the .j aws'j, fj, may be opened for disengagement with the stud 8, 'or to admit of the insertion ofthe j mesma same between them by extraneous means if desired, lt is to be understood however, that said rocking lock jaws partake of the nature of snap jaws in that they close automatically when released, and also that the convex head s', of the bolt stud s, may be utilized to spread them apart and eect its own engagement therewith.

What we claim as our invention and desire to secure by Letters Patent is,

1. In a lock of the character designated, the combination of a base plate 'formed with a shouldered .lock stud, a movable casing formed with an opening for the accommodation of said lock stud, and containing the operative parts, twin rocking lock jaws adapted to engage with said shouldered lock stud, one of said rock lock jaws `being formed with a latch arm, elastic resilient means which tend constantly to close said rocking lock jaws, a key escutcheon provided with a cam bolt arm adapted to rock the lock jaws to open the same, a fixed tumbler housing in which said escutcheon is rotatably mounted and a plurality of spring tumblers mounted in said housing and engageable with said key escutcheon, and adapted to be released therefrom by the wards in a plural flanged key, substantially in the manner and for the purpose set forth.

2. In a lock of the character designated, the combination of a base plate formed with a shouldered lock stud, a movable casing formed with an opening for the accommodation of said look stud, and containing the operative parts,` twin rocking lock jaws adapted to engage with said shouldered lock stud, one of said rock lock jaws being formed with a latch arm, elastic resilient means which tend constantly to close said rocking lock jaws, a key escutcheon provided with a cam bolt arm adapted to rock the lock jaws to open the same, a iiXed tumbler hous ing in which said escutcheon is rotatably mounted, and a plurality of spring tumblers mounted in said housing and engageable with said key escutcheon, and adapted to be released therefrom by the wards in a plural flanged key, together with a push pin arranged to spread the rocking lock jaws apart when the latter are unlocked, substantially in the manner and for the purpose described.

' 3. In a lock of the character designated,

the combination of a base plate formed with a shouldered lock stud, a movable casing formed with an opening for the accommodation of said lock stud and containing the operative parts, twin rocking lock jaws adapted to engage with said shouldered lock stud, one of said rock lock jaws Ybeing formed with a latch arm having a latch shoulder resting normally on a fixed part, the other rocking lock jaw being formed with an arm contacting with said latch lever on the other rocking lock jaw, elastic resilient means which tend constantly to close said rocking lock jaws, a key escutcheon provided With a cam bolt arm adapted to rock the lock jaws to open the same, a fixed tumbler housing in which said escutcheon is rotatably mounted, and a plurality of spring tumblers mounted in said housing and engageable with said key escutcheon, and adapted to be released therefrom by the wards in a plural ilanged key, substantially in the manner and for the purpose set forth.

4. In a lock of the character designated, the combination of a base plate formed with a shouldered lock stud, a movable casing formed with an opening for the accommodation of said lock stud and containing the operative parts, twin rocking lock jaws adapted to engage with said shouldered lock stud, one of said rock lock jaws being formed with a latch arm having a latch shoulderresting normally on a xed part, the other rocking lock jaw being formed with an arm contacting with Said latch lever on the other rocking lock jaw, an elastice resilient retractile spring straddling and contacting with said lock jaws in such manner as to tend constantly to close them, a key escutcheon provided with a cam bolt arm adapted to rock the lock jaws to open the same, a fixed tumbler housing in which said escutcheon is rotatably mounted, and a plurality of spring tumblers mounted in said housing and engageable with said key escutcheon, and adapted to be released therefrom by the wards in a plural flanged key, substantially in the manner and for the purpose set forth.

BENJAMIN C. BROSIN. JACOB H. SIEGEL. Witnesses:

Guo. WM. MIATT, MARGARET K. HANs'rmN. 

